Adjustable bearing-box construction



Nov. mm. "1514.121

J. A. ANDERSON ADJUTABLE BEARING BOX CONSTRUCTION Filed June gr, 1922. (2 sheets-5% 1 Nov. 4 mm J. A. ANDERSON ADJUSTABLE BEARING BOX CONSTRUCTION 2 Sheets-Sheet 2 Filed June 21, 1922 gwuenk o Jmhn A.Ar1dE I 5 an.

Ir a 7 52: Patented ilom'l, isaa. d e

JOHN A. ANDERSON, OE'BALATGN, MINNESOTA, ASSIGNOB G1 ONE-EAL? 'JCO FRED W. ANDERSON, OF BALATON. IVIINNESQTA.

ADJUSTABLE BEARING-BOX CONSTRUCTION.

Application file rnefl, 1922. Serial No. 569,788.

To all whom it may com-cm: Figure'o a bottom plan view of the Be it known that i, Jenn A. AND RSON, bearing construction 56 a citizen of the United States, residing at liigure 7 is plan view of an element of Balaton, in the county of Lyon and State the improved hearing construction.

6 cl Minnesota. have invented certain new Fi 'ure c is a traverse cross sectional v D, I. P and userul Improvements in Au uzstahle view, taken ontac line 8-8 otl igure t. Bearing-Box Constructions, of which the- .l igure' 9' 1S a transverse cross sectlonal 60 following is a specification. view, taken on the line 9-4; of Figure 7.

This invention relates to iniprovenients In the drawings, wherein for the purpose l in adjustable hearing arrangcuicnts lior supof illust 'ation is shown the preferred en1- porting shafts, spindles and the like, which hodiinent of this invention, i'the letter A will ctfcctively cornpcusatcxtor wear upon designates the improved bearing construe the bearing arrangement and shaft. non, which includes a housing B and ad- The primary object of the invention is the justing l'nechanism C. The adjusting l5 provision of a hearing cs'mstruction, iiiclud n'icchanisin 0 preferably comprises a box 10- ing' means for automatic adjustment of the and means 11 worlqing in cooperation with some for snugly receiving a shaft part, so said box 10 [or adpisting the latter to prop- 70 that the shaft part may he a :connnodatcd 0113/ journal a shalt member 12 therein. thereby, against liability of slapping or The housing 13, as illustrated in the drawloose bearing therein. legs, is a connecting rod, including the stem A further ohjc :t of the invention is the portion 15, which is provided with the semiprovision of a bearing construction, particcylindrical recess 16, formed inwardly upon 75 ularly well adapted for use upon connecting one end thereof and having the lateral a rods, wherehy the crank portion of a crank taching cars 17 formed outwardly thereon.

' shaft may he gripped in snug manner, at all A pocket 18 is provided, extending inwardly times; including an arinngenient l'oi comand longitudinally of the stern portion 15 pensation of wear upon the bearing construe of the connecting rod B, and which i53 tion and crank shaft incident to frictional ilorn'ied inwardly of the recess 16. A cap engagement. 20 is provided for use-upon the enlarged Other objects and advantages will be ap end of the connecting rod stern 15, which parent during the course of the following simulates somewhat the ordinary connecting detailed description. rod. cap and is provided with the bore or In the accon'ipanying drawings, forming depr ""ion 22, which is of semi-cylindrical a part of this symcification, and wherein formation. Attaching ears are provided 35 similar reference characters designate corupon the cap 20 extending laterally thereof responding parts throughout the several and adapted for cooperation with the atvievvs, taching ears 1'? for receiving the clamping Figure l is a side elevation oi a conholts As can readily he seen from the nee-ting rod of an engine, in which the izndrawings, when the bolts 2% are in position 40 proved hearing construction forms a part. to clamp the cap 20 upon the stem portion Figure 3 is a side elevation of the im- 15 to form the connecting rod B, the deproved hearing construction as embodied in pressions 16 and 22 are in facing relation,

a connecting rod, showing the same sup- Vt hile these depressions are preferably porting a shaft. struck from radii which are of the same 45 il igure 3 is a cross sectional view, taken dimension, it is a feature of this invention longitudinally of the lower portion of a conthat when the connecting rod or housing B necting rod, and showing the improved hearis so'assemblcd, that the said depressions ing construction as used in connection thercl6 and 22 will he ecccntrically disposed with for the support of a shalt. to provide shoulder portions 27 and 28, of

Figure 4 is a cross sectional View taken the cap and stem portions 20 and 15 respecon the line 4 4 of Figure 2. tively, which face the depressions 16 and 22 Figure 5 is a cross sectional View, taken respectively. In other words, when the conon the line 5--5 oi" Figure 4. I necting rod is so assembled, the shoulders 27 and 28 extend into the bore or opening provided therein .for receiving the box 10 of the adjusting mechanism C and 111 2.1 manner which will be subsequently described in detail.

Referrin now to the adjusting mecha- 's nism (J, theibox 10 thereof is rornied of any approved material, such as babbitt, and

adapted for receiving the shaft or spindle.

member 12, for-the same purpose that the ordinary bearing box is provided. This box 10, however, is formed of sections 30 and 31, which are adapted for working in the pockets 16 and 22 of the housing portions 15 and 20 respectively. The section 30 is of concave-convex formation, being arcuated in Wedge shaped manner, and having the outer arcuate or convex surface 32 thereof provided with the side flange extensions 33. lfhe outer surface 32 is also provided with a rib 3 1,inidway of the flanges 33; said rib 34 being provided .with a. plurality of teeth thereon, adapted for .coaction with the means 11, which will be subsequently described. The inner surface B6 of the seg-' ment 30 is struckfroxn a center, which is eccentrically disposed with respect to the center from which the outer surface-32 is -struck, so that the section 30 is wedge shaped, having an enlarged end 37,11'011'1 which the thickness of the section 30 gradually diminished to the end 238, where the section 30 is of least thickness. The section 31 is of concave-convex formation, and hav ing the concaved and convex surfaces 40 and 41 thereof struck in eccentric mzumer, whereby said sect ion 31. is of wedge shaped formation, and in which the end 1L2 is of greatest thickness and gradually diminishes in thickness to ard the end 4.3, where said section is of least thickness' The side flanges 4-4;, are altogether similar to the flanges 33 above described for that of section 30, are formed upon this section 31.

In assemblage, the surface 11 of the section 31 is disposed in abutting manner upon the inside surface of the cap depression 22, so that the enlarged end 12 of said section 31 is disposed against the shoulder 28 of the connectingrod stem '15. On the other hand, the section 10 is so disposed in the depression 16 above described, that the toothed rib is disposed upwardly in the pocket 18, and the enlarged end 37 'of said section 30 is disposed ad acent and facing thcsh'milder 27. When in this position,'concaved surfaces 36 and. -10 of the sections 30 and 31 respectively, are in facing relation and provide a circular opening for reception of the shaft member 12. The flanges 33 and H of said sections 30 and 31 respectively, are in sliding contact with the side surfaces of the stem and cap portions of the connecting rod B, and the sections thus prevented from lateral displacement from the same.

For lubricating purposes, apertures 46 and 4'? are provided transversely through the section 31 and the cap portion 20 of the connecting rod, so that they may be aligned when positioned for receiving the shaft portion 12 for lubricatingthe inside surfaces of the bearing box sections.

The means 11 for regulatingthe opening effected by the box '10 is entirely disposed within the pocket 18 of the connecting rod stern',15, and includes a pawl member 50,

bolt 51, which extends transversely through the stem 15; said pawl 50 includinga plurality of teeth 53 in segmental formation, for meshing relation with the teeth 35 of the box section 30. A spiral spring 5d, normally under compression, is seated at one end within a pocket depression 55 formed in the stem 15 and at its other end is dis posed over a pin 56, which is mounted on an extension 57 of the pawl 50, so that, said de'tachably pivoted. in the pocket 18 as by a pawl member 50 is normally forced bythe spring 51 inone direction as indicated by the arrow in Figure 3 of the drawings.

In operation, the box 10 will be assembled in the housing 13 as above described.

The crank portion 12 of a crank shaft, spindle or other shaft device will then be disposed within the circular opening formed by the box sections 30 and 31 above described. As the spring action upon the pawl on is such as to force the reduced end 38 of the top box section 30toward the enlarged end. 42 of the lower section 30 itcan be seen that'duc to'the Wedge shaped formation of the sections 30 and 31, the opening formed by the facing depressions therein Will tend to normally be reduced, so that the shaft 12 is snugly gripped between said box sections. It is to be noted that the direction of rotation of the shaft 12 is directly counter to the direction in which the box section 30 is moved. This counter action of the shaft member 12 will have a tendency to slide the box sections 30 and 31 so that the shaft loosely bears Within said box 10, notwithstanding the aetion of the yieldable means 12 thereon. As the abutting surfaces of the shaft member 12 and the box device 10 be come worn and reduced, the adjusting means 11 will force the section 30 circumferen tially about the shaft 12 and intermediate the same and the pocket 16 provided in the housing 13, so that notwithstanding the wear upon said parts the shaft member B will, at all times snugly bear in the boiidarrangement 10, to prevent a loose bearing and slapping of the shaft 12 during rotation thereof. Due to sudden jerking of the shaft member12, as during starting there: I

Jury

to the bearing box 10. The spring 54 is, of course, of suficient compressive snug bearing relation to the shaft part 12,

at all times, during normal rotation ofsaid shaft. The yieldeble means 12 not only acts upon the section 30, but as the box and shaft surfaces become Worn, the spring 541 will force the; segments or sections 30 circumferehtielly in the oeket 16, so that the reduced end 38. thereof may ride outwardly of the shoulder 28, to come into contact with the enlar ed end42 of the other box section 31, an start rotation of said box section 31 for taking up wear upon the box end shaft member by reduction of the 0 ening formed by the facing surfaces 36 an 45).-

From the fore 'oing, it can be seen that an automatically at jnsteble hearing hasbeen provided, which is or compact formation, and which hes no pert thereof extending so that the some might be injured as by knockingthereageinst. All parts of the improved device are detachable and readily accessible, so that the improved hearing construction is particularly well adapted for use in connee'tionwvith the connecting rods of crank shafts although the use of the bearing construction is not tobe so limited.

Various changes in the shape, size and arrangement of parts, may be made to the form of the invention herein shown and described, without departing from the spirit of the invention or the scope of the claim.

1' claim:

In a hearing construction a body having a main section end an auxiliary cop forming section, said sections being )rovided with off-set recesses it'ornoing a she '13 receiving bore having at opposite sides abutment shoulders facing in opposite directions, bushing members in said recesses tapered circumferentially of the bore and'eac'h hav ing its iarger end. positioned for engagement with en abutment shoulder and its smaller end adjacent the larger end of the other bushing member, the bushing member in the main body forming section having longitudinally spaced rack forming teeth, a segmental pinion forming member pivotelly mounted in said main section and having i its teeth engaging the rack forming teeth, and a. spring engaging said pinion for him parting movement to the pinion and urging the bushing in the main section towards the section.

larger end of the bushing in the auxiliary JOHN A. ANDERSON. 

